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Bayesian model selection for heteroskedastic models

In: Bayesian Econometrics

Author

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  • Cathy W.S. Chen
  • Richard Gerlach
  • Mike K.P. So

Abstract

It is well known that volatility asymmetry exists in financial markets. This paper reviews and investigates recently developed techniques for Bayesian estimation and model selection applied to a large group of modern asymmetric heteroskedastic models. These include the GJR-GARCH, threshold autoregression with GARCH errors, TGARCH, and double threshold heteroskedastic model with auxiliary threshold variables. Further, we briefly review recent methods for Bayesian model selection, such as, reversible-jump Markov chain Monte Carlo, Monte Carlo estimation via independent sampling from each model, and importance sampling methods. Seven heteroskedastic models are then compared, for three long series of daily Asian market returns, in a model selection study illustrating the preferred model selection method. Major evidence of nonlinearity in mean and volatility is found, with the preferred model having a weighted threshold variable of local and international market news.

Suggested Citation

  • Cathy W.S. Chen & Richard Gerlach & Mike K.P. So, 2008. "Bayesian model selection for heteroskedastic models," Advances in Econometrics, in: Bayesian Econometrics, pages 567-594, Emerald Group Publishing Limited.
    • Handle: RePEc:eme:aecozz:s0731-9053(08)23018-5
    DOI: 10.1016/S0731-9053(08)23018-5
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